On Wed, May 29, 2013 at 7:18 AM, Greg Troxel <[email protected]> wrote:
> > Tac Tacelosky <[email protected]> writes: > > > Are there any punctuation restrictions on tags? In particular, commas > > could be problematic for storing a list of tags as a single string. > > I am not clear on a formal grammer, but it seems clear that tag names > and non-numeric tag values should be limited to a-z, 0-9, and _, with > the leading character being a-z, and ; denoting multiple values. This > is fundamentally about communicating to computer programs. > Usually, but there exists exceptions such as service=drive-through instead of the expected service=drive_through or even service=drivethrough: http://wiki.openstreetmap.org/wiki/Tag:service=drive-through
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